CN215730887U - Condensate water recovery device of containment dome - Google Patents
Condensate water recovery device of containment dome Download PDFInfo
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- CN215730887U CN215730887U CN202122248220.4U CN202122248220U CN215730887U CN 215730887 U CN215730887 U CN 215730887U CN 202122248220 U CN202122248220 U CN 202122248220U CN 215730887 U CN215730887 U CN 215730887U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model provides a condensed water recovery device of a containment dome, which comprises a safety shell, wherein a water receiving plate is hung on the top surface in the safety shell, a refueling water tank is arranged in the safety shell, and the refueling water tank is close to the lower part of the safety shell; the water receiving plate is connected with the material changing water tank through the drainage assembly, and condensed water collected on the water receiving plate flows through the drainage assembly and then enters the material changing water tank. The condensed water recovery device for the containment dome provided by the utility model can collect condensed water formed at the containment dome and recover the condensed water into the refueling water tank, so that the condensed water reflux rate is further improved, the liquid level in the refueling water tank is maintained as much as possible, the exposed rate of a heat exchanger is delayed, the cooling rate of a reactor is accelerated, and the safety allowance under the accident condition is improved.
Description
Technical Field
The utility model belongs to the technical field of nuclear power safety, and particularly relates to a condensate water recovery device for a containment dome.
Background
The passive residual heat removal passive nuclear power plant passive core cooling system is one of the most important functions, different from the traditional second generation pressurized water reactor nuclear power plant, under some accident conditions, the passive nuclear power plant transfers core decay heat to cooling water in a refueling water tank in a containment through natural circulation, after a period of time, the cooling water in the refueling water tank can be boiled, water vapor generated by boiling can be condensed on the inner wall surface of the containment, and formed condensed water flows down along the inner wall surface of the containment and flows back to the refueling water tank through drainage devices such as a downpipe and the like so as to maintain the water level of the refueling water tank as far as possible and keep a heat trap from losing. If the condensed water can not return or most of the condensed water can not return, the liquid level of the material changing water tank is continuously reduced, and the heat exchanger is exposed, so that the heat transfer efficiency is reduced.
At present, although a series of improvement measures are taken by a nuclear power plant to improve the reflux rate of the condensed water, the actual reflux rate of the condensed water is still low. The top of the containment dome is close to the horizontal, and the gravity borne by condensed water drops on the top is greater than the adhesive force and the surface tension, so that condensed water directly drops from the surface of the dome, and further, part of the condensed water is lost.
CN113029848A discloses a test device of test nuclear power station containment internal wall condensate recovery efficiency, the device including be used for simulating the jar body of nuclear power station containment, the condensation backward flow subassembly of simulation condensation backward flow and collection comdenstion water, be used for carrying out the weighing subassembly that weighs to the comdenstion water of collecting. The condensation backflow component and the weighing component are both arranged in the tank body, and the weighing component is arranged at the condensed water collecting end of the condensation backflow component. The weighing component weighs the condensate recovered by the condensation reflux component, and then the condensate recovery efficiency is obtained. Although the test device for the condensate recovery efficiency has a certain guiding effect on the optimal design of the condensate recovery system on the inner wall surface of the containment, the condensate which directly drops from the dome of the containment cannot be recovered. In addition, there may be certain difficulties in using the experimental apparatus in an actual production operation process.
CN106875987A discloses a passive containment cooling system, in which steam generated in a containment causes pressure in the containment to rise, a control valve is triggered to start the passive cooling system, the steam enters a condensing low-pressure turbine through a steam inlet pipe and drives a turbine rotor to do work, exhaust gas after temperature and pressure reduction is condensed through an air-cooled condenser, and the condensed water flows back to the containment through a condensed water return pipe. CN111540486A discloses a small-size pressurized water reactor and a long-term passive heat removal system of a containment, which comprises a passive surplus heat exchanger, a low-pressure safety injection pipeline, a recirculation pipeline, a low-pressure safety injection water tank, a containment pit, a containment and a condensate water collecting device, wherein the passive surplus heat exchanger is immersed in the low-pressure safety injection water tank, the low-pressure safety injection tank is connected with a reactor descending section through the low-pressure safety injection pipeline, and the containment pit is connected with the reactor descending section through the recirculation pipeline. Although the above documents can improve the nuclear power safety to some extent, the condensate water directly dropping from the containment dome cannot be recovered.
Therefore, the condensate water recovery device for the containment dome is designed, the condensate water dropping from the containment dome is recovered, the condensate water reflux rate is improved, the exposed rate of the heat exchanger is delayed, and the condensate water recovery device is of great importance for improving the safety allowance under the accident working condition.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a condensate water recovery device for a containment dome, which can collect and recover condensate water formed in the containment dome into a refueling water tank, further improve the reflux rate of the condensate water, maintain the liquid level in the refueling water tank as much as possible, delay the exposed rate of a heat exchanger, accelerate the cooling rate of a reactor and improve the safety allowance under the accident condition.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a condensed water recovery device of a containment dome, which comprises a safety shell, wherein a water receiving plate is hung on the top surface inside the safety shell, a refueling water tank is arranged inside the safety shell, and the refueling water tank is close to the lower part of the safety shell.
The water receiving plate is connected with the material changing water tank through the drainage assembly, and condensed water collected on the water receiving plate flows through the drainage assembly and then enters the material changing water tank.
According to the condensed water recovery device for the containment dome, the water receiving plate is additionally arranged in the safety shell, condensed water formed in the containment dome can be collected and recovered to the refueling water tank, the condensed water reflux rate is further improved, the liquid level in the refueling water tank is maintained as far as possible, the exposed rate of a heat exchanger is delayed, the cooling rate of a reactor is accelerated, and the safety allowance under the accident condition is improved.
As a preferred technical solution of the present invention, a circumferential ring hanging beam is further disposed inside the safety casing, and the circumferential ring hanging beam is disposed on the inner wall of the safety casing and is close to the top surface of the safety casing; and a floor drain is arranged on the track of the ring hanging beam.
Along the flow direction of the condensed water, the drainage assembly sequentially comprises a water conduit and a water falling pipe, the water conduit and the water falling pipe are in butt joint through the floor drain, and the condensed water in the water conduit and the condensed water gathered on the track of the ring hanging beam flow into the water falling pipe through the floor drain.
One end of the water diversion pipe, which is far away from the floor drain, is connected with the water receiving plate, one end of the downpipe, which is far away from the floor drain, is connected with the refueling water tank, and the downpipe is close to the inner wall of the safety shell.
In the utility model, the bottom of the water receiving plate is provided with a drain hole, and condensed water collected by the water receiving plate flows into the drainage tube through the drain hole. The drainage tube can also directly discharge the condensed water to the vicinity of the floor drain, and the condensed water flows into the water receiving tube from the floor drain and then is recovered to the material changing water tank.
It should be noted that the size and shape of the floor drain are not specifically required or limited, and the floor drain in the present invention is used for guiding the cooling water in the water conduit to the downpipe. Therefore, it can be understood that the floor drain capable of guiding the cooling water in the water conduit to the downpipe can be used in the utility model, and the size and the shape of the floor drain can be adaptively adjusted by the skilled person according to the practical scene and the size of the ring hanging beam.
As a preferred technical scheme of the utility model, the number of the floor drains is at least one, and the top of the floor drain is provided with a filter screen.
In the utility model, the filter screen is arranged at the top of the floor drain to filter the condensed water from the water conduit and the condensed water flowing down along the inner wall of the containment vessel, so as to prevent the downpipe from being blocked.
The number of the downpipes is at least one, the pipe diameter of the downpipe is 90-110 mm, for example, 90mm, 93mm, 95mm, 98mm, 100mm, 102mm, 105mm, 107mm or 110mm, but the downpipe is not limited to the values listed, and other values not listed in the range of the values are also applicable.
In the utility model, the downpipe is made of stainless steel.
One floor drain corresponds to one downpipe, and condensed water in the downpipe flows to the refueling water tank.
In the utility model, a plurality of floor drains can be arranged on the track of the ring hanging beam and matched with the same number of downpipes. Exemplarily, two floor drains are arranged at approximately symmetrical positions of the ring hanging beam rail, the bottoms of the two floor drains are both connected with water falling pipes, the two water falling pipes can be respectively connected with the material changing water tank, one end of one water falling pipe, which is far away from the floor drain, can be connected into the other water falling pipe, and finally, the condensed water is recovered to the material changing water tank.
In a preferred embodiment of the present invention, the water conduit is inclined from the water receiving plate toward the floor drain, one end of the water conduit close to the floor drain is connected to a metal hose, and the outer diameter of the water conduit is 90 to 110mm, for example, 90mm, 93mm, 95mm, 98mm, 100mm, 102mm, 105mm, 107mm, or 110mm, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range are also applicable.
In the utility model, the water conduit is made of stainless steel. Meanwhile, the water receiving plate is in an area which is not easy to reach during operation and maintenance, and inspection and maintenance are inconvenient, so that a filter screen is not arranged at a drainage hole at the bottom of the water receiving plate, the pipe diameter of the water conduit is selected to be larger, and the water conduit is ensured not to be blocked.
In addition, the water conduit is more favorable to discharging the comdenstion water that the water collector collected to the floor drain department for the slope sets up. Meanwhile, a plurality of hangers can be arranged on the water receiving plate and/or the containment dome to support the water conduit. One end of the water conduit close to the floor drain is connected with a metal hose, and the water conduit can not collide with a dome of the containment vessel when the water conduit and the ring hanging beam are rocked under the earthquake working condition through the hose.
In a preferred embodiment of the present invention, the thickness of the water receiving plate is 8 to 30mm, for example, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm or 30mm, but the thickness is not limited to the above-mentioned values, and other values not shown in the above-mentioned value range are also applicable.
The distance between the bottom of the water receiving plate and the top of the safety shell is 4300-4700 mm, for example 4300mm, 4350mm, 4400mm, 4450mm, 4500mm, 4550mm, 4600mm, 4650mm or 4700mm, but the numerical value is not limited to the enumerated numerical value, and other numerical values not enumerated in the numerical value range are also applicable.
In a preferred embodiment of the present invention, the water receiving plate is a concave arc surface, and the diameter of the opening of the water receiving plate is 14000 to 17000mm, for example, 14000mm, 14500mm, 15000mm, 15500mm, 16000mm, 16500mm, or 17000mm, but the present invention is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
The height of the water-receiving plate is 1000-1900 mm, for example, 1000mm, 1100mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1700mm, 1800mm or 1900mm, but the utility model is not limited to the values listed, and other values not listed in the range of the values are also applicable.
In the utility model, the water receiving plate is made of stainless steel material or SA-738Gr.B material with the surface sprayed with an inorganic zinc coating, and the inorganic zinc coating sprayed on the surface mainly plays a role in rust prevention and water hydrophilicity increase. In addition, the water receiving plate is suspended and fixed on the top surface inside the safety shell through a steel cable.
As a preferable technical scheme, a hydrogen concentration monitor meter and a hydrogen igniter are installed on one side, away from the top of the safety shell, of the water receiving plate.
In the utility model, the water receiving plate hung on the top surface in the safety shell can interfere with the hydrogen concentration monitor and the hydrogen igniter hung on the water receiving plate. Therefore, the hydrogen concentration monitor meter and the hydrogen igniter can be directly installed or hung on one side of the water receiving plate far away from the top of the safety shell, namely the lower side of the water receiving plate.
As a preferable technical scheme of the utility model, at least one exhaust assembly is arranged on the water receiving plate, and steam in the safety shell penetrates through the exhaust assembly and reaches the upper space of the water receiving plate.
The exhaust assembly comprises an exhaust pipe and a top plate, one end of the exhaust pipe penetrates through the water receiving plate, and the other end of the exhaust pipe is provided with the top plate.
In the utility model, the material of the exhaust component is SA-738Gr.B, and the exhaust pipe is connected with the top plate by welding.
After the water receiving plate is hung on the top surface inside the safety shell, the atmosphere or steam in the containment can reach the upper part of the water receiving plate only by bypassing the water receiving plate, certain obstruction is caused to the flow of the atmosphere or the steam, and the heat transfer process of the containment can be influenced. Therefore, the exhaust assembly is arranged on the water receiving plate, and the atmosphere or steam in the containment can pass through the water receiving plate through the exhaust assembly and reach the upper space of the water receiving plate, so that the influence of the water receiving plate on the flow of the atmosphere or steam in the containment is reduced as much as possible.
As a preferable technical scheme of the utility model, the top plate is a convex cambered surface.
According to the utility model, the exhaust assembly is provided with the top plate, so that condensed water can be prevented from dripping through the exhaust assembly and not being collected by the water receiving plate. Simultaneously, the roof design is bellied cambered surface so that the comdenstion water that falls on the roof can flow to the water receiving board smoothly on.
The outer diameter of the exhaust pipe is 1100-1300 mm, for example 1100mm, 1120mm, 1150mm, 1180mm, 1200mm, 1230mm, 1250mm, 1280mm or 1300mm, but is not limited to the values listed, and other values not listed in the range of the values are also applicable.
The height of the exhaust pipe is 500 to 2000mm, and may be, for example, 500mm, 700mm, 900mm, 1100mm, 1300mm, 1500mm, 1700mm, 1850mm or 2000mm, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
At least one notch is formed in one end, close to the top plate, of the exhaust pipe, and the long side of the notch is 300-1900 mm, such as 300mm, 500mm, 700mm, 900mm, 1100mm, 1300mm, 1500mm, 1700mm or 1900 mm; the width of the edge is 500 to 1200mm, for example, 500mm, 600mm, 700mm, 800mm, 900mm, 1000mm, 1100mm or 1200mm, and is not limited to the values listed, and other values not listed in the range of the values are also applicable.
For example, four notches may be symmetrically formed in the exhaust pipe to allow steam in the containment to pass through the water receiving plate.
As a preferable technical solution of the present invention, a heat exchanger is further disposed inside the refueling water tank.
It should be noted that the water receiving plate, the steel cable, the water conduit, the filter screen, the exhaust assembly, the support and hanger and the like adopted in the utility model are all safe class-C and anti-seismic class-I equipment.
Compared with the prior art, the utility model has the beneficial effects that:
the condensed water recovery device for the containment dome provided by the utility model can collect condensed water formed in the containment dome and recover the condensed water into the refueling water tank, so that the condensed water reflux rate is further improved, the liquid level in the refueling water tank is maintained as much as possible, the exposed rate of a heat exchanger is delayed, the cooling rate of a reactor is accelerated, and the safety allowance under the accident condition is improved.
Drawings
Fig. 1 is a schematic structural diagram of a condensate recovery apparatus for a containment dome according to an embodiment of the present invention.
FIG. 2 is a schematic view of an exhaust assembly according to an embodiment of the present invention.
Fig. 3 is a schematic view illustrating distribution of the air discharge assembly on the water receiving plate according to an embodiment of the present invention.
Wherein, 1-a safety housing; 2-a heat exchanger; 3-a refueling water tank; 4-a downpipe; 5-floor drain; 6-a water conduit; 7-a steel cord; 8-a water receiving plate; 9-an exhaust assembly; 10-ring hanging beam; 11-a top plate; 12-exhaust pipe.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
In one embodiment, the utility model provides a condensate recovery device for a containment dome, as shown in fig. 1, the condensate recovery device for the containment dome comprises a safety housing 1, a water receiving plate 8 is hung on the top surface of the interior of the safety housing 1, a refueling water tank 3 is arranged in the interior of the safety housing 1, and the refueling water tank 3 is close to the lower part of the safety housing 1.
The water receiving plate 8 is connected with the refueling water tank 3 through a drainage assembly, and condensed water collected on the water receiving plate 8 flows through the drainage assembly and then enters the refueling water tank 3.
According to the condensed water recovery device for the containment dome, the water receiving plate 8 is additionally arranged in the safety shell 1, condensed water formed in the containment dome can be collected and recovered into the refueling water tank 3, the condensed water reflux rate is further improved, the liquid level in the refueling water tank 3 is maintained as far as possible, the exposed rate of the heat exchanger 2 is delayed, the cooling rate of a reactor is accelerated, and the safety allowance under the accident condition is improved.
Further, a circumferential ring hanging beam 10 is further arranged inside the safety casing 1, and the circumferential ring hanging beam 10 is arranged on the inner wall of the safety casing 1 and close to the top surface of the safety casing 1; and a floor drain 5 is arranged on the track of the ring hanging beam 10.
Along the flow direction of the condensed water, the drainage assembly sequentially comprises a water conduit 6 and a downpipe 4. The water diversion pipe 6 and the downpipe 4 are butted through the floor drain 5, and condensed water in the water diversion pipe 6 and condensed water gathered on the track of the ring hanging beam 10 flow into the downpipe 4 through the floor drain 5.
One end of the water conduit 6, which is far away from the floor drain 5, is connected with the water receiving plate 8, one end of the downpipe 4, which is far away from the floor drain 5, is connected with the refueling water tank 3, and the downpipe 4 is close to the inner wall of the safety shell 1.
A drain hole is formed in the bottom of the water receiving plate 8, and condensed water collected by the water receiving plate 8 flows into the drainage tube through the drain hole. The drainage tube can also directly discharge the condensed water to the vicinity of the floor drain 5, and the condensed water flows into the water receiving tube from the floor drain 5 and then is recovered to the material changing water tank 3.
It should be noted that the present invention does not specifically require and limit the size and shape of the floor drain 5, and the floor drain 5 is used to guide the cooling water in the water conduit 6 to the downpipe 4. It will be understood that the floor drain 5 capable of guiding the cooling water in the water conduit 6 to the downpipe 4 can be used in the present invention, and those skilled in the art can adjust the size and shape of the floor drain 5 according to practical situations and the size of the ring hanging beam 10.
Further, the number of the floor drains 5 is at least one, and a filter screen is arranged at the bottom of each floor drain 5. The filter screen is arranged on the top of the floor drain 5 to filter the condensed water from the water conduit 6 and the condensed water flowing down along the inner wall of the containment vessel, so that the downpipe 4 is prevented from being blocked.
The number of the downpipe 4 is at least one, the pipe diameter of the downpipe 4 is 90-110 mm, and the downpipe 4 is made of stainless steel. One floor drain 5 corresponds to one downpipe 4, and condensed water in the downpipe 4 flows to the refueling water tank 3.
A plurality of floor drains 5 can be arranged on the track of the ring beam 10 and matched with the same number of downpipes 4. Exemplarily, two floor drains 5 are arranged at approximately symmetrical positions of the track of the ring hanging beam 10, bottoms of the two floor drains 5 are both connected with a downpipe 4, the two downpipes 4 can be respectively connected with the refueling water tank 3, one end of one downpipe 4 far away from the floor drain 5 can be connected into the other downpipe 4, and finally, the condensed water is recovered to the refueling water tank 3.
Furthermore, the water diversion pipe 6 is obliquely arranged from the water receiving plate 8 to the direction of the floor drain 5, one end, close to the floor drain 5, of the water diversion pipe 6 is connected with a metal hose, and the outer diameter of the water diversion pipe 6 is 90-110 mm.
Wherein, the material of the water conduit 6 is stainless steel. Meanwhile, the water receiving plate 8 is an area which is not easy to reach in operation and maintenance, and inspection and maintenance are inconvenient, so that a filter screen is not arranged at a drainage hole at the bottom of the water receiving plate 8, the pipe diameter of the water conduit 6 is selected to be larger, and the water conduit is ensured not to be blocked.
In addition, the water conduit 6 is inclined, so that condensed water collected by the water receiving plate 8 can be discharged to the floor drain 5. Meanwhile, a plurality of hangers can be arranged on the water receiving plate 8 and/or the containment dome to support the water conduit 6. One end of the water conduit 6 close to the floor drain 5 is connected with a metal hose, and the water conduit 6 cannot collide with a dome of the containment vessel when the water conduit and the ring hanging beam 10 shake under the earthquake working condition.
Further, the thickness of the water receiving plate 8 is 8-30 mm, and the distance between the bottom of the water receiving plate 8 and the top of the safety shell 1 is 4300-4700 mm. Furthermore, the water receiving plate 8 is a concave cambered surface, the diameter of an opening of the water receiving plate 8 is 14000-17000 mm, and the height of the water receiving plate 8 is 1000-1900 mm.
The water receiving plate 8 is made of stainless steel materials or SA-738Gr.B with inorganic zinc coatings sprayed on the surface, and the inorganic zinc coatings sprayed on the surface mainly play roles in rust prevention and water hydrophilicity increasing. In addition, the water receiving plate 8 is suspended and fixed on the inner top surface of the safety shell 1 through a steel cable 7.
Further, one side of the water receiving plate 8, which is far away from the top of the safety shell 1, is provided with a hydrogen concentration monitor meter and a hydrogen igniter. The water receiving plate 8 suspended on the top surface inside the safety housing 1 interferes with the hydrogen concentration monitor meter and the hydrogen igniter which are suspended at the top surface. Therefore, the hydrogen concentration monitor meter and the hydrogen igniter can be directly mounted or hung on the side of the water receiving plate 8 away from the top of the safety housing 1.
Further, at least one exhaust assembly 9 is arranged on the water receiving plate 8, and steam in the safety shell 1 passes through the exhaust assembly 9 and reaches the upper space of the water receiving plate 8. As shown in fig. 2, the exhaust assembly 9 includes an exhaust pipe 12 and a top plate 11, one end of the exhaust pipe 12 penetrates the water receiving plate 8, and the other end is provided with the top plate 11. The material of the exhaust component 9 is SA-738Gr.B, and the exhaust pipe 12 is connected with the top plate 11 by welding.
After the water receiving plate 8 is hung on the top surface inside the safety shell 1, atmosphere or steam in the containment can reach the upper part of the water receiving plate 8 only by bypassing the water receiving plate 8, certain obstruction is caused to the flow of the atmosphere or the steam, and the heat transfer process of the containment can be influenced. Therefore, as shown in fig. 3, the exhaust assembly 9 may be disposed on the water receiving plate 8, and the atmosphere or the steam in the containment vessel may pass through the exhaust assembly 9 to reach the upper space of the water receiving plate 8, so as to reduce the influence of the water receiving plate 8 on the flow of the atmosphere or the steam in the containment vessel as much as possible.
Further, the top plate 11 is a convex arc surface. The exhaust assembly 9 is provided with a top plate 11, which can prevent condensed water from dripping through the exhaust assembly 9 and not being collected by the water receiving plate 8. Meanwhile, the top plate 11 is designed to be a convex arc surface so that the condensed water falling on the top plate 11 can smoothly flow to the water receiving plate 8. The outer diameter of the exhaust pipe 12 is 1100-1300 mm, and the height is 500-2000 mm.
One end of the exhaust pipe 12 close to the top plate 11 is provided with at least one notch, and the long side of the notch is 300-1900 mm; the width of the wide side is 500-1200 mm. For example, four notches may be symmetrically formed on the exhaust pipe 12 to allow the steam in the containment to pass through the water receiving plate 8.
It should be noted that the water receiving plate 8, the steel cable 7, the water conduit 6, the filter screen, the exhaust assembly 9, the support hanger and the like adopted in the utility model are all safe class-C and anti-seismic class-I equipment.
Illustratively, when the condensed water recovery device of the containment dome provided by the utility model is used, water vapor in the containment is condensed at the dome of the safety shell 1, condensed water dropping from the dome is collected by the water receiving plate 8, and the condensed water is discharged to the floor drain 5 on the track of the ring hanging beam 10 through the water conduit 6. Then the condensed water is led to the downpipe 4 by the floor drain 5 and finally recovered to the refueling water tank 3. In addition, the condensed water on the inner side wall of the safety shell 1 also flows to the track of the ring hanging beam 10, is collected by the track of the ring hanging beam 10, flows into the downpipe 4 through the floor drain 5, and is finally recovered to the refueling water tank 3.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The condensed water recovery device for the containment dome is characterized by comprising a safety shell, wherein a water receiving plate is hung on the top surface inside the safety shell, a refueling water tank is arranged inside the safety shell, and the refueling water tank is close to the lower part of the safety shell;
the water receiving plate is connected with the material changing water tank through the drainage assembly, and condensed water collected on the water receiving plate flows through the drainage assembly and then enters the material changing water tank.
2. The condensate recovery apparatus for a containment dome of claim 1, wherein the interior of the containment shell is further provided with circumferential ring suspension beams disposed on the inner wall of the containment shell and proximate to the top surface of the containment shell; a floor drain is arranged on the track of the ring hanging beam;
along the flowing direction of the condensed water, the drainage assembly sequentially comprises a water diversion pipe and a water falling pipe, the water diversion pipe and the water falling pipe are in butt joint through the floor drain, and the condensed water in the water diversion pipe and the condensed water gathered on the track of the ring hanging beam flow into the water falling pipe through the floor drain;
one end of the water diversion pipe, which is far away from the floor drain, is connected with the water receiving plate, one end of the downpipe, which is far away from the floor drain, is connected with the refueling water tank, and the downpipe is close to the inner wall of the safety shell.
3. The condensate recovery device for the containment dome of claim 2, wherein the number of the floor drains is at least one, and a filter screen is arranged at the top of each floor drain;
the number of the downpipe is at least one, and the pipe diameter of the downpipe is 90-110 mm;
one floor drain corresponds to one downpipe, and condensed water in the downpipe flows to the refueling water tank.
4. The condensate recovery device for the containment dome of claim 2, wherein the water conduit is arranged in a manner that the water receiving plate inclines towards the floor drain, one end of the water conduit close to the floor drain is connected with a metal hose, and the outer diameter of the water conduit is 90-110 mm.
5. The condensate recovery device of the containment dome of claim 1, wherein the thickness of the water receiving plate is 8-30 mm, and the distance between the bottom of the water receiving plate and the top of the safety casing is 4300-4700 mm.
6. The condensate recovery device of the containment dome of claim 1, wherein the water receiving plate is a concave arc, the diameter of an opening of the water receiving plate is 14000-17000 mm, and the height of the water receiving plate is 1000-1900 mm.
7. The condensate recovery device for a containment dome of claim 1, wherein a hydrogen concentration monitor meter and a hydrogen igniter are installed on a side of the water receiving plate away from the top of the safety housing.
8. The condensate recovery apparatus for a containment dome of claim 1, wherein the water-receiving plate is provided with at least one vent assembly, and steam in the safety housing passes through the vent assembly to reach an upper space of the water-receiving plate;
the exhaust assembly comprises an exhaust pipe and a top plate, one end of the exhaust pipe penetrates through the water receiving plate, and the other end of the exhaust pipe is provided with the top plate.
9. The condensate recovery device for the containment dome of claim 8, wherein the top plate is a convex cambered surface, the outer diameter of the exhaust pipe is 1100-1300 mm, and the height of the exhaust pipe is 500-2000 mm.
10. The condensate recovery device for the containment dome of claim 8, wherein at least one notch is formed in one end, close to the top plate, of the exhaust pipe, the long side of the notch is 300-1900 mm, and the wide side of the notch is 500-1200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122248220.4U CN215730887U (en) | 2021-09-16 | 2021-09-16 | Condensate water recovery device of containment dome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122248220.4U CN215730887U (en) | 2021-09-16 | 2021-09-16 | Condensate water recovery device of containment dome |
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